Junglewise Threat Intelligence

CVE-2025-32706: Microsoft Windows Common Log File System (CLFS) Driver Heap-Based Buffer Overflow Vulnerability

CVE-2025-32706 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2025-05-13

Technologies: Microsoft Windows, Microsoft Windows Server, Microsoft Windows 11, Microsoft Windows 10. Vendors: Microsoft.

Executive brief

A heap-based buffer overflow vulnerability in the Microsoft Windows Common Log File System (CLFS) Driver allows a locally authenticated attacker to elevate privileges. The flaw stems from improper input validation within the driver and has been observed being exploited in the wild.

Affected products

  • Microsoft Windows 10 1507, 1607, 1809, 21H2, 22H2
  • Microsoft Windows 11 22H2, 23H2, 24H2
  • Microsoft Windows Server 2008, 2012 R2, 2016, 2019, 2022, 23H2, 2025

Timeline

  • 2025-05-13: disclosed
  • 2025-05-13: kev added: Added to CISA Known Exploited Vulnerabilities Catalog

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